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Analog Devices Inc./Maxim Integrated LM4050BIX3-3.0
- Part No.:
- LM4050BIX3-3.0
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
LM4050BIX3-3.0.pdf
- Description:
- PRECISION MICROPOWER SHUNT VREF
- Quantity:
- Payment:
- Shipping:
Inventory:2,256
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Product details
Overview
LM4050BIX3-3.0 from Maxim Integrated is a precision 3.000V shunt voltage reference in SC70-3 package, featuring 0.2% initial accuracy, ±15ppm/°C temperature coefficient over –40°C to +125°C, 60µA–15mA operating current range, and 45µVRMS wideband noise (10Hz–10kHz). It serves as a stable, low-power reference in battery-powered ADCs, portable instrumentation, and industrial sensor signal conditioning circuits.
For engineers reviewing the LM4050BIX3-3.0 datasheet, LM4050BIX3-3.0 pinout, LM4050BIX3-3.0 application, or LM4050BIX3-3.0 equivalent, key selection criteria include guaranteed shunt-current stability across temperature, no external capacitor requirement, ultra-small SC70 footprint for space-constrained designs, and compatibility with high-impedance loads in precision analog front-ends.
Technical Context
The LM4050BIX3-3.0 implements a laser-trimmed bandgap shunt architecture that maintains a fixed 3.000V reverse breakdown voltage across its anode and cathode terminals when biased with 60µA–15mA shunt current. Its internal BiCMOS process ensures low dynamic impedance (≤0.8Ω at 1mA) and stable regulation without output capacitance.
It operates over the full industrial temperature range (–40°C to +125°C) with guaranteed performance: reverse voltage change ≤8.0mV across 1–15mA current variation, long-term stability of 120ppm after 1000 hours, and tolerance of any capacitive load without oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V ±6.0mV at +25°C (0.2% grade); enables precise 3V reference for 12-bit+ SAR ADCs |
| Tempco | ±15ppm/°C max (–40°C to +125°C); contributes ≤±0.45mV drift over full range |
| Operating Current | 60µA to 15mA; supports micropower sensor biasing and high-current DAC references |
| Dynamic Impedance | ≤0.8Ω at 1mA, 120Hz; ensures minimal load-induced voltage shift in varying current conditions |
| Wideband Noise | 45µVRMS (10Hz–10kHz); suitable for low-noise instrumentation amplifier references |
| Long-Term Stability | 120ppm after 1000h; reduces calibration frequency in field-deployed measurement systems |
Pinout & Package
LM4050BIX3-3.0 is housed in a 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23. Pin 3 is unconnected (N.C.) and must be left floating or tied to Pin 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Anode | Positive terminal; connects to system ground or low-impedance return path in shunt configuration |
| 2 (−) | Cathode | Negative terminal; connects to regulated reference node and series resistor (RS) input |
| 3 (N.C.) | No Connection | Must remain unconnected or shorted to Pin 2; no internal function or electrical path |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 package | 1.8mm × 1.8mm footprint enables high-density PCB layouts in wearables and handheld medical devices |
| No output capacitor required | Stable operation with any capacitive load eliminates BOM cost and layout risk from external COUT |
| 60µA minimum operating current | Enables use in sub-100µA power budget systems such as coin-cell IoT sensors |
| Guaranteed –40°C to +125°C operation | Validated performance across automotive under-hood and industrial control environments |
| Low 45µVRMS noise | Supports <12-bit ENOB in precision data acquisition without additional filtering |
Applications
| Portable Instrumentation | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Handheld multimeter with 16-bit sigma-delta ADC requiring stable 3V reference for ratiometric measurements. IC Role / Device Role / Timing Role: Shunt voltage reference providing excitation and scaling reference for ADC and sensor front-end. Use Value: 0.2% initial accuracy and ±15ppm/°C tempco ensure <0.05% total error across operating temperature without recalibration. | Use Scenario: Remote environmental sensor node powered by Li-SOCl₂ battery, logging temperature/humidity every 10 minutes. IC Role / Device Role / Timing Role: Low-quiescent-current reference for microcontroller ADC and analog sensor conditioning circuitry. Use Value: 60µA minimum operating current allows continuous reference biasing while preserving multi-year battery life. |
| Industrial Process Transmitters | Medical Wearable Sensors |
Use Scenario: 4–20mA loop-powered pressure transmitter with HART interface operating in harsh factory environments. IC Role / Device Role / Timing Role: Precision shunt reference for DAC-based current loop control and sensor signal offset correction. Use Value: Guaranteed operation from –40°C to +125°C and 120ppm long-term stability reduce field failure rates and maintenance cycles. | Use Scenario: ECG patch with ultra-low-power analog front-end and integrated ADC sampling at 1kSPS. IC Role / Device Role / Timing Role: Stable 3.000V reference for instrumentation amplifier gain setting and ADC reference voltage. Use Value: 45µVRMS noise floor ensures clean baseline for microvolt-level biopotential signal digitization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431ACDBVR | Adjustable 1.24V–18V output; 0.5% initial accuracy; higher 90ppm/°C tempco; SOT23-3 package | Requires external resistors for 3.0V setting; less stable over temperature than LM4050BIX3-3.0 | Choose when adjustable output or higher voltage capability is needed; not drop-in for fixed 3.0V use |
| REF3030AIDBZR | 3.0V series reference; 0.2% initial accuracy; 50ppm/°C tempco; 50µA quiescent current; SOT23-3 | Series topology requires minimum load current; incompatible with shunt-based bias networks | Prefer for low-dropout, high-PSRR applications where supply headroom permits series configuration |
Compared with TLVH431ACDBVR and REF3030AIDBZR, the LM4050BIX3-3.0 delivers superior thermal stability (±15ppm/°C vs. 90ppm/°C or 50ppm/°C), eliminates external resistor networks, and integrates seamlessly into existing shunt-reference schematics without layout changes.
Availability
LM4050BIX3-3.0 is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered data loggers, and industrial process transmitters requiring stable component supply with guaranteed long-term availability.
Supply support for LM4050BIX3-3.0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for demanding industrial, automotive, and medical applications.
The LM4050/LM4051 product line delivers micropower, high-accuracy shunt voltage references optimized for space-constrained, battery-operated, and wide-temperature systems where stability and small footprint are critical.
FAQ
What is the guaranteed operating temperature range for LM4050BIX3-3.0?
The LM4050BIX3-3.0 is fully specified and guaranteed over –40°C to +125°C. All electrical parameters-including output voltage accuracy, temperature coefficient, and dynamic impedance-are tested and validated across this full industrial temperature range per the datasheet's Electrical Characteristics tables.
Does LM4050BIX3-3.0 require an external output capacitor for stability?
No, the LM4050BIX3-3.0 does not require an external output capacitor. Its internal design ensures unconditional stability with any capacitive load, eliminating the need for external COUT and simplifying layout in noise-sensitive analog circuits.
What is the minimum shunt current required for proper regulation of LM4050BIX3-3.0?
The LM4050BIX3-3.0 requires a minimum shunt current of 67µA (typical) and guarantees regulation down to 60µA across temperature. Maintaining ≥60µA ensures the device remains in reverse breakdown and delivers specified voltage accuracy and stability.
How does the pin configuration of LM4050BIX3-3.0 differ from standard zener diodes?
Unlike discrete zeners, LM4050BIX3-3.0 uses a 3-pin SC70 package: Pin 1 is anode (+), Pin 2 is cathode (–), and Pin 3 is N.C. (no connection). Pin 3 must be left floating or tied to Pin 2-never driven-to avoid compromising regulation or damaging the device.
Can LM4050BIX3-3.0 be used in series with a load instead of shunt configuration?
No, LM4050BIX3-3.0 is a two-terminal shunt reference designed to operate in parallel with the load. It sinks current through its cathode to maintain a fixed 3.000V across its terminals. Series (three-terminal) operation is not supported and would prevent proper regulation.
LM4050BIX3-3.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 45µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 67 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
LM4050BIX3-3.0 FAQ
1.How can I place an order for LM4050BIX3-3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BIX3-3.0 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM4050BIX3-3.0 reliable?
The price and inventory of LM4050BIX3-3.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BIX3-3.0 is usually 5 days.
3.What payment methods are accepted for LM4050BIX3-3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BIX3-3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BIX3-3.0?
LM4050BIX3-3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BIX3-3.0 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM4050BIX3-3.0?
For technical support, including LM4050BIX3-3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BIX3-3.0 requirements.
6.How does Aetrix verify that LM4050BIX3-3.0 is sourced from the original manufacturer or authorized distributors?
All LM4050BIX3-3.0 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM4050BIX3-3.0 meets industry standards.
7.What is the process for return or replacement of LM4050BIX3-3.0?
All LM4050BIX3-3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BIX3-3.0, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM4050BIX3-3.0 part is unused and in its original packaging.
Return procedure for LM4050BIX3-3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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